In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A reproduction of earth's many biomes.

The shop's owner has spent decades in the desert wearing nothing but a strategically placed sock.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

For those going through a life transition, a place to leave behind a piece of your former self.

An urban laboratory.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Collection of vintage trailers double as hotel rooms.

America's only nuclear missile silo open to the public.

One of the largest, oldest, darkest, quietest motel rooms in the world.

An homage to everyone's favorite prehistoric cartoon family.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This bomb shelter-themed bar has barely changed since it opened.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Dramatic river bend surrounds a natural red-rocked pedestal.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A self-built castle made by a mysterious man.

A computer bug so primitive it was an actual insect.

This grand gothic brewery has been pumping out suds for over a hundred years.